Nautical. either of a pair of disks of hardwood having holes through which a lanyard is rove: used to tighten shrouds and stays.
2.
an expert marksman.
Origin
1740-50;dead + eye; as nautical term, probably ellipsis from deadman's eye,Middle Englishdedmaneseye deadeye
Examples from the web for deadeye
The trick is launching the virtually weightless fly to a distant spot with deadeye accuracy.
The deadeye featured here was part of the rigging on the ship and controlled the ropes that raised and lowered the sails.
British Dictionary definitions for deadeye
deadeye
/ˈdɛdˌaɪ/
noun
1.
(nautical) either of a pair of disclike wooden blocks, supported by straps in grooves around them, between which a line is rove so as to draw them together to tighten a shroud Compare bull's-eye (sense 9)